Mag. 4.1 earthquake - 36 km north of Viña del Mar, Valparaiso, Valparaíso, Chile, on 8 Oct 1:28 am (GMT -3) -
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Light magnitude 4.1 earthquake at 33 km depth
8 Oct 04:43 UTC: First to report: EMSC after 14 minutes.
8 Oct 04:44: Now using data updates from GUG (U. Chile)
8 Oct 05:48: Hypocenter depth recalculated from 28.4 to 33.4 km (from 17.6 to 21 mi). Epicenter location corrected by 1.3 km (0.8 mi) towards WNW.
8 Oct 04:44: Now using data updates from GUG (U. Chile)
8 Oct 05:48: Hypocenter depth recalculated from 28.4 to 33.4 km (from 17.6 to 21 mi). Epicenter location corrected by 1.3 km (0.8 mi) towards WNW.
Local time at epicenter: 8 Oct 1:28 am (GMT -3)
Magnitude: 4.1
Depth: 33.4 km
Epicenter latitude / longitude: 32.711°S / 71.624°W

Nearest volcano: Tupungatito (185 km / 115 mi)
Nearby towns and cities:
36 km (22 mi) N of Viña del Mar (pop: 294,600) --> See nearby quakes!
36 km (22 mi) N of Valparaiso (pop: 282,400) --> See nearby quakes!
39 km (24 mi) W of Hacienda La Calera (pop: 49,100) --> See nearby quakes!
40 km (25 mi) WNW of Quillota (pop: 67,800) --> See nearby quakes!
41 km (26 mi) NNW of Quilpué (pop: 130,300) --> See nearby quakes!
44 km (27 mi) NNW of Villa Alemana (pop: 97,300) --> See nearby quakes!
47 km (29 mi) SW of La Ligua (Petorca) (pop: 24,900) --> See nearby quakes!
48 km (30 mi) NW of Limache (Marga Marga) (pop: 35,900) --> See nearby quakes!
123 km (76 mi) NW of Santiago (pop: 4,837,300) --> See nearby quakes!
140 km (87 mi) NW of Puente Alto (pop: 510,400) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
10.6°C (51 F), humidity: 82%, wind: 6 m/s (12 kts) from SSW
Primary data source: GUG (U. Chile)
Clear Sky

Estimated released energy: 8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Magnitude | Depth | Location | Source |
M 4.1 | 33 km | 37 Km Al N De Valparaíso, Chile | GUG (U. Chile) |
M 4.2 | 26 km | Offshore Valparaiso, Chile | EMSC |
M 4.2 | 35 km | 35 Km N of Valparaíso, Chile | USGS |
User reports for this quake (12)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Concon (50.3 km SSE of epicenter) [Map] / Light shaking (MMI IV) / 10-15 s : Nada especial. (reported through our app)
costa puyai 2 (1.6 km ESE of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 5-10 s
Valparaiso Centro (37.1 km S of epicenter) [Map] / Light shaking (MMI IV) / 5-10 s : A few seconds of rattling and shaking. A computer monitor swayed on its desk.
Avenida Borgono, Concón, Valparaíso / Light shaking (MMI IV) / single vertical bump / 2-5 s : Woke up 5 mins before, felt it and went back to sleep
Viña del Mar (Chile, 35 km S of epicenter) : Lo sentimos , fue un remezón fuerte y corto. (reported through EMSC)
Viña del Mar (Chile, 35 km S of epicenter) : Se sintió fuerte remezon nada más estaba a punto de dormir y me despertó .. fue corto (reported through EMSC)
Las Heras (Argentina, 266 km E of epicenter) : Suave pero perseptible (reported through EMSC)
Santiago (Chile, 126 km SE of epicenter) : Corto (reported through EMSC)
Lo Prado (Chile, 119 km SE of epicenter) : Comenzó muy suave y luego la intensidad fue aumentando pero muy rápido (reported through EMSC)
La Ligua (Chile, 48 km NE of epicenter) : Mucho ruido, muy extraño (reported through EMSC)
Viña del Mar (Chile, 37 km S of epicenter) : Se sintió ruido primero (reported through EMSC)
Viña del Mar (Chile, 37 km S of epicenter) : Poco movimiento, mucho ruido (reported through EMSC)
Earlier earthquakes in the same area since 1900
Mag. 4.1 earthquake - 36 km north of Viña del Mar, Valparaiso, Valparaíso, Chile, on 8 Oct 1:28 am (GMT -3)- Date / time UTC| Mag |Depth|Age|Distance| Details
- 17 Aug 1906 00:40| 8.2 |35km / 22mi|115 years ago|40km / 25mi| Valparaiso, Chile
- 06 Apr 1943 16:07| 8.1 |35km / 22mi|78 years ago|143km / 89mi| Coquimbo, Chile
- 03 Mar 1985 22:47| 8.0 |33km / 21mi|36 years ago|52km / 33mi| Offshore Valparaiso, Chile
- 16 Sep 2015 22:54| 7.8 |10km / 6.2mi|5 years ago|129km / 80mi| Near Coast of Central Chile
- 09 Jul 1971 03:03| 7.8 |60km / 37mi|50 years ago|53km / 33mi| Valparaiso, Chile
- 04 Mar 1985 00:32| 7.4 |33km / 21mi|36 years ago|55km / 34mi| Valparaiso, Chile
- 28 Mar 1965 16:33| 7.4 |70km / 43mi|56 years ago|42km / 26mi| Valparaiso, Chile
- 09 Apr 1985 01:56| 7.2 |38km / 23mi|36 years ago|158km / 98mi| Libertador General Bernardo O'Higgins, Chile
- 16 Oct 1981 03:25| 7.2 |33km / 21mi|39 years ago|143km / 89mi| Off the Coast of Valparaiso, Chile
- 18 Mar 1931 08:02| 7.2 |35km / 22mi|90 years ago|119km / 74mi| Valparaiso, Chile
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